The rotary ash cooler is invented by Chinese (Created in China). SONGLING has a number of patented technologies in Rotary ash cooler.
SONGLING's rotary ash cooler account for over 70% market share in China, ranged from 50MW to 600MW CFB unit.
Several types of ash coolers with transferred technology from Europe and US, such as screw coolers and the fluidized type of ash coolers, were installed in China initially. As the frequent failure of those initial designs of ash cooler in this service quickly became apparent, now those coolers are replaced by rotary ash coolers totally.